Chemistry - Coordination Chemistry Question with Solution | TestHub

Crystal field splitting depends upon the nature of ligand. The nature of ligand $\Delta$ decreases as shown below ${\mathrm{C}}_2{\mathrm{O}}_4^{--}<{\mathrm{H}}_2\mathrm{O}<{\mathrm{NH}}_3<{\mathrm{CN}}^{-}$ hence the crystal field splitting will be maximum for ${\left[\mathrm{Co}(\mathrm{CN}{)}_6\right]}^{3-}$